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US 8,897,982 B2Granted
Method for driving a hybrid vehicle in a load reversal
AssigneeRobert Bosch GmbH
InventorsAlexander Maass, Jens-Werner Falkenstein, Markus Vogelgesang, Benjamin Klotz, Manfred Hellmann
Life of this patent
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Abstract
A method for driving a hybrid vehicle during a load reversal includes: the application of a first torque on a first hybrid vehicle axle during an acceleration reversal; and the application of a second torque on a second hybrid vehicle axle during the acceleration reversal, a direction of action of the second torque being opposite to a direction of action of the first torque.
Claims23
A method for operating a hybrid vehicle, comprising:
- identifying an impending zero crossing of a propulsive torque of the hybrid vehicle from a negative propulsive torque to a positive propulsive torque;
- and
- prior to and during the zero crossing of the propulsive torque of the hybrid vehicle, maintaining a positive first torque supplied to a first hybrid vehicle axle by a combustion engine and a negative second torque supplied to a second hybrid vehicle axle by an electric motor;
- implementing a zero crossing of the second torque supplied by the electric motor to the second hybrid vehicle axle at a predefined time after the zero crossing of the propulsive torque of the hybrid vehicle;
- and
- adjusting a magnitude of each of the first and second torques so that a sum of the first and second torques equals a target propulsive torque value.
3 more elements
A control unit for operating a hybrid vehicle, comprising:
- means for controlling application of a first torque on a first hybrid vehicle axle;
- and
- means for controlling application of a second torque on a second hybrid vehicle axle,
- wherein responsive to the control unit identifying an impending zero crossing of a propulsive torque of the hybrid vehicle, the control unit controls application of the first and second torques to:
- maintain, prior to and during the zero crossing of the propulsive torque of the hybrid vehicle, a positive value of the first torque supplied to the first hybrid vehicle axle by a combustion engine and a negative value of the second torque supplied to the second hybrid vehicle axle by an electric motor;
- implement a zero crossing of the second torque supplied by the electric motor to the second hybrid vehicle axle at a predefined time after the zero crossing of the propulsive torque of the hybrid vehicle;
- and
- adjust a magnitude of the first and the second torques so that a sum of the first and the second torques equals a target propulsive torque value.
5 more elements
A method for operating a hybrid vehicle, comprising:
- prior to and during a zero crossing of a propulsive torque of the hybrid vehicle from a negative to a positive propulsive torque, maintaining a positive first torque supplied to a first hybrid vehicle axle by a combustion engine and a negative second torque supplied to a second hybrid vehicle axle by an electric motor;
- and
- implementing a zero crossing of the second torque supplied by the electric motor to the second hybrid vehicle axle at a predefined time after the zero crossing of the propulsive torque of the hybrid vehicle.
A control unit for operating a hybrid vehicle, the control unit comprising:
- means for controlling application of a first torque on a first hybrid vehicle axle;
- and
- means for controlling application of a second torque on a second hybrid vehicle axle,
- wherein the control unit controls application of the first and second torques to:
- prior to and during a zero crossing of a propulsive torque of the hybrid vehicle from a negative to a positive propulsive torque, maintain a positive first torque supplied to a first hybrid vehicle axle by a combustion engine and a negative second torque supplied to a second hybrid vehicle axle by an electric motor;
- and
- implement a zero crossing of the second torque supplied by the electric motor to the second hybrid vehicle axle at a predefined time after the zero crossing of the propulsive torque of the hybrid vehicle.
4 more elements
Dependencies are inferred from the claim text.